[pstricks] PSTricks Digest, Vol 168, Issue 2

Dong Li bnuzsd at gmail.com
Fri Feb 3 09:06:16 CET 2017


Hello Herbert,

It works now, thank you very much.

2017-02-02 19:00 GMT+08:00 <pstricks-request at tug.org>:

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>    1. Re: what's wrong with these codes (from pstricks manual
>       (p223) (Herbert Voss)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 1 Feb 2017 16:43:29 +0100
> From: Herbert Voss <Herbert.Voss at FU-Berlin.DE>
> To: pstricks at tug.org
> Subject: Re: [pstricks] what's wrong with these codes (from pstricks
>         manual (p223)
> Message-ID: <de8fdc6b-3996-71ba-f4e2-8026c4a57651 at FU-Berlin.DE>
> Content-Type: text/plain; charset=windows-1252; format=flowed
>
> Am 01.02.2017 um 02:40 schrieb Dong Li:
> > Hello,
> >
> >      what's wrong with these codes (from pstricks manual (p223). It
> doesn't
> >      work. Who can help me modify these codes. Thanks!
>
> what means "it doesn't work"??
>
> Herbert
>
>
> >
> >
> >
> >     \documentclass{article}
> >     \usepackage[dvipsnames,x11names,svgnames]{pstricks}
> >
> >     \makeatletter
> >     \define at key[psset]{}{SurfaceA}{\def\PstColorSynthesis at SurfaceA{#1}}
> >     \define at key[psset]{}{SurfaceB}{\def\PstColorSynthesis at SurfaceB{#1}}
> >     \define at key[psset]{}{SurfaceC}{\def\PstColorSynthesis at SurfaceC{#1}}
> >     \define at key[psset]{}{ColorA}{\def\PstColorSynthesis at ColorA{#1}}
> >     \define at key[psset]{}{ColorB}{\def\PstColorSynthesis at ColorB{#1}}
> >     \define at key[psset]{}{ColorC}{\def\PstColorSynthesis at ColorC{#1}}
> >     \def\PstColorSynthesis{\pst at object{PstColorSynthesis}}%
> >     \def\PstColorSynthesis at i{{%
> >                     \psset{linestyle=none}%
> >                     \use at par% Assignment of local parameters
> >                     \bgroup
> >
> >     \psset{fillstyle=solid,fillcolor=\PstColorSynthesis at ColorA}%
> >                     \PstColorSynthesis at SurfaceA
> >                     \psset{fillcolor=\PstColorSynthesis at ColorB}%
> >                     \PstColorSynthesis at SurfaceB
> >                     \psset{fillcolor=\PstColorSynthesis at ColorC}%
> >                     \PstColorSynthesis at SurfaceC
> >                     \egroup
> >                     \PstColorSynthesis at ClippedSurfaces{A}{B}{NoSurface}%
> >                     \PstColorSynthesis at ClippedSurfaces{A}{C}{NoSurface}%
> >                     \PstColorSynthesis at ClippedSurfaces{B}{C}{NoSurface}%
> >                     \PstColorSynthesis at ClippedSurfaces{A}{B}{C}}}
> >
> >     \def\PstColorSynthesis at ColorNoSurface{}
> >     % We draw the first surface #1 clipped by the one
> >     % or two others #2 and #3, computing it resulting color
> >     \def\PstColorSynthesis at ClippedSurfaces#1#2#3{%
> >             % We compute the ?mixed? color, component by component
> >             \def\PstColorSynthesis at MixedColorR{0}%
> >             \def\PstColorSynthesis at MixedColorG{0}%
> >             \def\PstColorSynthesis at MixedColorB{0}%
> >             % \pst at dimd will contain the maximum value of the three
> >             % components.
> >             \pst at dimd=\z@
> >             \PstColorSynthesis at MixedColor{%
> >                     \csname PstColorSynthesis at Color#1\endcsname}%
> >             \PstColorSynthesis at MixedColor{%
> >                     \csname PstColorSynthesis at Color#2\endcsname}%
> >             \PstColorSynthesis at MixedColor{%
> >                     \csname PstColorSynthesis at Color#3\endcsname}%
> >             % We must test if the maximum of the new computed
> >             % component is greater than 1, in which case we divide all
> >             % the three components by this value for additive synthesis.
> >             \ifdim\pst at dimd>\@ne\p@
> >
> >     \PstColorSynthesis at MixedColor@iii{\PstColorSynthesis at MixedColorR}%
> >
> >     \PstColorSynthesis at MixedColor@iii{\PstColorSynthesis at MixedColorG}%
> >
> >     \PstColorSynthesis at MixedColor@iii{\PstColorSynthesis at MixedColorB}%
> >             \fi
> >             % We draw the first surface, clipped by the other ones
> >             \psclip{\csname PstColorSynthesis at Surface#2\endcsname%
> >                     \csname PstColorSynthesis at Surface#3\endcsname}
> >             \definecolor{MixedColor}{rgb}{\PstColorSynthesis at MixedColorR
> ,
> >                     \PstColorSynthesis at MixedColorG,
> >                     \PstColorSynthesis at MixedColorB}%
> >             \psset{fillstyle=solid,fillcolor=MixedColor}%
> >             \csname PstColorSynthesis at Surface#1\endcsname
> >             \endpsclip}
> >     \def\PstColorSynthesis at MixedColor#1{%
> >             \edef\@tempa{#1}%
> >             \ifx\@tempa\@empty
> >             \else
> >             \pst at expandafter\PstColorSynthesis at MixedColor@i{%
> >                     \csname\string\color@#1\endcsname}\@nil
> >             \fi}
> >
> >     \def\PstColorSynthesis at MixedColor@i#1 #2 #3 #4\@nil{%
> >             % We receive the name of the color model (?rgb? is expected
> >             % here and the three color components.)
> >             % We add the values to the respective components of the new
> >             % color to compute.
> >             \PstColorSynthesis at MixedColor@ii{%
> >                     \PstColorSynthesis at MixedColorR}{#2}%
> >             \PstColorSynthesis at MixedColor@ii{%
> >                     \PstColorSynthesis at MixedColorG}{#3}%
> >             \PstColorSynthesis at MixedColor@ii{%
> >                     \PstColorSynthesis at MixedColorB}{#4}}
> >
> >     \def\PstColorSynthesis at MixedColor@ii#1#2{%
> >             % As these values are real numbers, we use dimension
> >             % registers, then we assign the computed value in a macro,
> >             % converting it from a dimension to a number.
> >             % We also keep in \pst at dimd the maximum of the values.
> >             \pst at dimg=#1\p@
> >             \advance\pst at dimg by #2\p@
> >             \pst at dimtonum{\pst at dimg}{#1}%
> >             \ifdim\pst at dimg>\pst at dimd
> >             \pst at dimd=\pst at dimg
> >             \fi}
> >
> >     \def\PstColorSynthesis at MixedColor@iii#1{%
> >             \pst at divide{#1\p@}{\pst at dimd}{#1}%
> >             % We must take care of possible rounding problems with
> >             % \pst at divide (for instance, 1.8/1.8 give 1.0001)
> >             \ifdim#1\p@>\@ne\p@
> >             \def#1{1}%
> >             \fi}
> >
> >     % We redefine Cyan, Magenta and Yellow in the ?rgb? model
> >     \definecolor{Cyan}{rgb}{0,1,1}%
> >     \definecolor{Magenta}{rgb}{1,0,1}%
> >     \definecolor{Yellow}{rgb}{1,1,0}%
> >     \makeatother
> >
> >     \begin{document}
> >
> >             \begin{pspicture}
> >             \PstColorSynthesis[SurfaceA={\pscircle{2}},
> >             SurfaceB={\pscircle(2,0){2}},SurfaceC={\pscircle(1,2){2}},
> >             ColorA=Cyan,ColorB=Magenta,ColorC=Yellow]
> >
> >     \PstColorSynthesis[SurfaceA={\psccurve(-3,1)(0,2.5)(2,1.5)(
> 4,3)(4,-1)
> >                     (3,0)(1,-2.5)(-1,-1)(-3,-3)},
> >             SurfaceB={\psellipticarc(0,-1)(3,1.5){41}{-92}},
> >             SurfaceC={\pstriangle(1,-2)(5,5)},
> >             ColorA=SlateBlue,ColorB=Orange,ColorC=Pink]
> >             \end{pspicture}
> >     \end{document}
> >
> >
> >
> >
> >
> >
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> >
>
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> End of PSTricks Digest, Vol 168, Issue 2
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